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Proceedings Paper

New kind of efficient preionic long life time TEA CO2 laser
Author(s): Deming Ren; Fengmei M. Liu; Yanchen Qu; Xiaoyong Hu; Jingshan Zhao; Xingzhi Sheng
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Paper Abstract

In our work, the design and performance of a new kind TEA CO2 laser is reported. It was preionized by ultraviolet (UV) from surface corona discharge. A BN ceramic structure was employed as an assembly of resonators. The output energy of 143 mJ, the pulse duration of 50 ns, the transverse mode of TEM00, the repetition-rate of 50 Hz, the divergence of only 4 mrad was obtained. Comparing with UV bare-spark- preionized (BSP) TEA CO2 lasers, it was found that (1) the uniform of the main electrode discharge was improved, (2) the repetition-rate was improved from 30 Hz to 50 Hz, (3) the input energy was four times lower than that of BSP TEA CO2 laser under the same output energy, (4) the lifetime reached 106 pulse, (5) the stability of resonator was improved, the output energy eliminated only 14% after 3.5 hours operation. The performance was improved because the intrinsic efficiency of surface corona preionization was four times higher than that of BSP one, the corona discharge was very uniform and photodissociation processes involved in BSP were avoided. The extremely low thermal-expansion of BN minimized the misalignment, so the high reliability can be obtained.

Paper Details

Date Published: 30 September 1996
PDF: 4 pages
Proc. SPIE 2889, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers, (30 September 1996); doi: 10.1117/12.253314
Show Author Affiliations
Deming Ren, Harbin Univ. of Science and Technology (China)
Fengmei M. Liu, Harbin Univ. of Science and Technology (China)
Yanchen Qu, Harbin Univ. of Science and Technology (China)
Xiaoyong Hu, Harbin Univ. of Science and Technology (China)
Jingshan Zhao, Harbin Univ. of Science and Technology (China)
Xingzhi Sheng, Harbin Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 2889:
High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers
Sui-Sheng Mei; Keith A. Truesdell, Editor(s)

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